isherwood



L. BURDIGK, EL'J. CHASE an P. P'. s W. s. ISHBRWOD.'

TOBAGO-o mum.

No. 91,601. Patented June 22, 1869.

' To all whom it may concern diluted gtatrs stent otitis. l

LEANDER BURDICK, H. J. CHASE, F. P.

ISHERWOOD, .OF TOLEDO, OHIO'.

Lettersl Patent N 91,601, dated June 22, 1869.

TOBACCO-DRIER.

wQ-rw- The Schedule referred to in these Letters Patent and making pap vol' the same.

13e-it known thatwe, LEANDER BURDIGK, H. J. CHASE, F. P. IsHEnwooD, and W. S. Isneewoon, all of Toledo, in the county of Lucas, and State of Ohio, have inventeda new and improved Process foi' Curing Tobacco; and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, makingpart of this specification, iu which- Figure 1 is a longitudinal section,- taken m the vertical `plane Y Y, through an apparatuswhich is adapted' for use in conduetingour improved process.

is its cells, would `causa it m mould andbeeomesoilir,

and give to it an unpleasant taste and odor. This treatment is termed sweating, or curing, and, as hitherto conducted, it is a long and expensive process, the success of.' which depends upon the condition of the weather.

Thenature of our invention. consists in subjecting tobacco to the action of artificial heat, ranging from 90 `to 110 Fahrenheit, by enclosing the tobacco within a chest, which is surrounded by la jacket or external case, intoxwhiolx latter steam is'conducted,

said chest being provided with an outletfor the es.

cape of the juices, which are expelled from the leaves in the form of vapor, and also with one or more perforated pipes, for allowing more or less steam to enter the'chest during the process, as will be hereinafter explained.

To enable others skilled inthe art to understand our invention, we will describe one practical mode of conducting the process.

' In the accompanying diawingss A represents a box or case, which maybe made of any suitable capacity, and 'which is provided with a tightly-fitting movable cover, for allowingaccess to its interior when required.

B is a chest, made somewhat smaller in every direc` tion than case A, andalso fitting movable cover. I

This chest B is arranged within the case A,'so as to leave a space, a, surrounding it, into which space steam is admitted through pipe c,'from any suitable generator.

We prefer to make the case A of wood, or other heat non-conducting material, for preventing undue radiation of heat; and also to make the interior chest provided with a tightly;-

of wood, or other similar material, to prevent liability ot' scorching the tobacco which is contiaued therein.

,izapnrand .This chest B has a number of' imperforated pipes, F, arranged at or near its bottom, and passing through it, which'pipes are open at their extremities, for allow ing steam from space a to circulate freely through them,vand giving oli" a large amount of lieatto the linterior of the chest.

One of the pipes in chest B is thickly perforated,

closed permanently at one end, and provided with avalve, g, at its opposite end, for closing this end when desired.

Valve q is applied on the inner end of a screw-rod, g', which passes through theouter case A, and is tapped through a xed nutrh..

By means of pipe G audits valve, steam from space a can be introduced into the chest B, or prevented from entering thischest, as may be found necessary during the process.

` A pipe, E, leads frfom the interior of chest B, through one ol' the walls ofthe case A, and conducts off all the disagreeable oder whichrises from the tobacco.

' s is a pipe `which leads through the bottom of the case A, andcouducts -ol the water of condensation from steam-space u.

'In conjunction with this apparatus, two thermometers, O D, are employed for indicatingthe temperature, both in the chest B and in the steam-space a. The thermometers are applied in suitable chambers, formed on the case A, so asto be exposed to view during the process of treating the tobacco. The cham. -ber enclosing the thermometer C communicates with the interior of the chest B, byI means of the ipe d,- and the chamber enclosing the .thermometer lg communicates with the steam-space a, by means of the pipe or orifice e, shown in tig, 1.

The tobacco to be treated is arranged loosely upon aframe within-the chest B, and the cover of this chest,v together with the cover of case A, are confined down tightly. Steam is then admitted-into the space a,

through pipe c, and the tobacco is thus subjectedto heat ranging from 90 to 110o "Fahrenheit, which temperatures will be indicated by the thermometers -on the outside of case A, andv should be maintained for several hours, or until the tobacco has been com pletely cured.

During this process a noxious vapor will escape from the interior of' the chest 4through pipe E, which' isproduced by the evaporation ofl those juices in the to bacoo that must be .expelled before it is in a condition to-be man ulactured.

If' at any time during the treatmentit lis desired to introduce steam directly into the chest, for moisteniug the tobacco and giving it darker shades of color, this can be done by adjusting valve lg, a nd opening one end of pipe Cr. 'We have found that leaves and stems of tobacco ISHERWOOD, AND W. S.

may he given Very dark shades by subjecting them to the action of steam; also that the heat which is applied to tobacco vby means herein described, will sweat it rapidly and thoroughly, and in a short time expel the impurities which it is desired .to get rid of, at the same timejmprove the quality of the tobacco for mannfacturing purposes.

Having described our invention,

What we claim as new, and desire to secure by Letters Patent, is

1. The method or process of tobacco, substantially as described.

2. In the process of sweating and curing tobacco, the

sweating and curing employment of an apparatus consisting of a chest, B,

enclosed by a case, A, so as to leave a steam-space, a,

Witnesses as to signature of LEANDER BURDICK:

lE. W. ANDERSON, I. N. CAMPBELL. Witnesses:

A W. L. LAMB,

M. J. .Esamina 

